Massive growth in data center traffic is urgently driving the need for bandwidth upgrades in the data center. Data center operators require cost-effective next generation optical transceivers to support their migration from 100 gigabit Ethernet (GE) to 400GE. Test time is a significant factor that contributes to the overall cost of transceivers. This White Paper shows how efficient testing across the broad range of transceiver data rates accelerates innovation and lowers cost.